Luminescence and scintillation properties of BaF2-Ce transparent ceramic

被引：24
|
作者：
Luo, Junming [1 ]
Sahi, Sunil [2 ]
Groza, Michael [3 ]
Wang, Zhiqiang [4 ]
Ma, Lun [2 ]
Chen, Wei [2 ]
Burger, Arnold [3 ]
Kenarangui, Rasool [5 ]
Sham, Tsun-Kong [4 ]
Selim, Farida A. [6 ]
机构：
[1] Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Peoples R China
[2] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA
[3] Fisk Univ, Dept Life & Phys Sci, Nashville, TN 37208 USA
[4] Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada
[5] Univ Texas Arlington, Dept Elect Engn, Arlington, TX 76019 USA
[6] Bowling Green State Univ, Ctr Photochem Sci, Bowling Green, OH 43403 USA
来源：
OPTICAL MATERIALS | 2016年 / 58卷
基金：
美国国家科学基金会;
关键词：
Barium fluoride; Transparent ceramic; Scintillation; Photo peak; Luminescence; Scintillation decay time; RESONANCE ENERGY-TRANSFER; CRYSTALS; ENHANCEMENT; FLUORIDE; LA-3+; RAY; CE;
D O I：
10.1016/j.optmat.2016.05.059
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cerium doped Barium Fluoride (BaF2-Ce) transparent ceramic was fabricated and its luminescence and scintillation properties were studied. The photoluminescence shows the emission peaks at 310 nm and 323 nm and is related to the 5d-4f transitions in Ce3+ ion. Photo peak at 511 keV and 1274 keV were obtained with BaF2-Ce transparent ceramic for Na-22 radioisotopes. Energy resolution of 13.5% at 662 keV is calculated for the BaF2-Ce transparent ceramic. Light yield of 5100 photons/MeV was recorded for BaF2-Ce(0.2%) ceramic and is comparable to its single crystal counterpart. Scintillation decay time measurements shows fast component of 58 ns and a relatively slow component of 434 ns under 662 keV gamma excitation. The slower component in BaF2-Ce(0.2%) ceramic is about 200 ns faster than the STE emission in BaF2 host and is associated with the dipole-dipole energy transfer from the host matrix to Ce3+ luminescence center. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：353 / 356
页数：4
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